Needle punched felt composition

PPS

Thickness (mm)

1.8

Air permeability (m3/m2/min)

≥15

Breaking Strength
(N/5*20cm)

warp

≥1250

weft

≥1350

elongation

warp

≤40

weft

≤60

Tenacity ( Mpa/min)

2.55

Constant working temperature (^oC)

≤190

Instant working temperature (^oC)

220

Acid resistant

excellent

Alkali resistant

excellent

Abrasion resistant

common

Hydrolyze stability

excellent

Finishing treatment

Signed, calendering, heat-set

temperature (^oC)

constant

190

instant

220